Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam lan don snippets" » "dam van don snippets", "dam phan don snippets", "pham lan don snippets", "dam la don snippets", "dam lan dan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dam lan don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam lan don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam lan don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam lan don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.